rpowers

// Set an embedded data element called "response_order" in survey flow to randomly have value of "reversed" half the time 
// Add the following JavaScript to the questions for which you want to flip the ordering (see here: https://www.qualtrics.com/support/survey-platform/edit-survey/question-options/add-javascript/). 
// This is a (very) minor variation on: http://stackoverflow.com/a/30766022
// It allows all response scales to increase/decrease in the same direction for a given respondent, but avoids response order bias. 

Qualtrics.SurveyEngine.addOnload(function() {
	var r_order = "${e://Field/response_order}"
    if(r_order == "reversed") {
        var qid = this.questionId;
        var choices = $(qid).select('li.Selection');